[syntax-errors] Tuple unpacking in for statement iterator clause before Python 3.9#16558
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[syntax-errors] Tuple unpacking in for statement iterator clause before Python 3.9#16558
for statement iterator clause before Python 3.9#16558Conversation
before Python 3.9 Summary -- This PR reuses a slightly modified version of the `check_tuple_unpacking` method added for detecting unpacking in `return` and `yield` statements to detect the same issue in the iterator clause of `for` loops. I ran into the same issue with a bare `for x in *rest: ...` example (invalid on every Python) and added it as a comment on #16520. I considered just making this an additional `StarTupleKind` variant as well, but this change was in a different version of Python, so I kept it separate. Test Plan -- New inline tests.
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MichaReiser
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Mar 7, 2025
dhruvmanila
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Mar 10, 2025
dcreager
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* main: (53 commits) [syntax-errors] Tuple unpacking in `for` statement iterator clause before Python 3.9 (#16558) Ruff v0.10 Release (#16708) Add new `noqa` specification to the docs (#16703) describe requires-python fallback in docs (#16704) [red-knot] handle cycles in MRO/bases resolution (#16693) [red-knot] Auto generate statement nodes (#16645) [`pylint`] Better inference for `str.strip` (`PLE310`) (#16671) [`pylint`] Improve `repeated-equality-comparison` fix to use a `set` when all elements are hashable (`PLR1714`) (#16685) [`pylint`/`pep8-naming`] Check `__new__` argument name in `bad-staticmethod-argument` and not `invalid-first-argument-name-for-class-method` (`PLW0211`/`N804`) (#16676) [`flake8-pyi`] Stabilize fix for `unused-private-type-var` (`PYI018`) (#16682) [`flake8-bandit`] Deprecate `suspicious-xmle-tree-usage` (`S320`) (#16680) [`flake8-simplify`] Avoid double negation in fixes (`SIM103`) (#16684) [`pyupgrade`]: Improve diagnostic range for `redundant-open-mode` (`UP015`) (#16672) Consider all `TYPE_CHECKING` symbols for type-checking blocks (#16669) [`pep8-naming`]: Ignore methods decorated with `@typing.override` (`invalid-argument-name`) (#16667) Stabilize FURB169 preview behavior (#16666) [`pylint`] Detect invalid default value type for `os.environ.get` (`PLW1508`) (#16674) [`flake8-pytest-style`] Allow for loops with empty bodies (`PT012`, `PT031`) (#16678) [`pyupgrade`]: Deprecate `non-pep604-isinstance` (`UP038`) (#16681) [`flake8-type-checking`] Stabilize `runtime-cast-value` (`TC006`) (#16637) ...
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Summary
This PR reuses a slightly modified version of the
check_tuple_unpackingmethod added for detecting unpacking inreturnandyieldstatements to detect the same issue in the iterator clause offorloops.I ran into the same issue with a bare
for x in *rest: ...example (invalid even on Python 3.13) and added it as a comment on #16520.I considered just making this an additional
StarTupleKindvariant as well, but this change was in a different version of Python, so I kept it separate.Test Plan
New inline tests.